Data Sheet

Page 106
RFM95/96/97/98(W)
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WIRELESS & SENSING PRELIMINARY DATASHEET
Name
(Address)
Bits
Variable Name
Mode Reset
LoRa
TM
Description
RegPktRssiValue
(0x1A)
7-0
PacketRssi
r
n/a
RSSI of the latest packet received (dBm)
R S S I [ dB m ] = – 137 + Pack et Rssi
RegRssiValue
(0x1B)
7-0
Rssi
r
n/a
Current RSSI value (dBm)
RSSI [ dBm ] = – 137 + Rssi
7 PllTimeout r
n/a
PLL failed to lock while attempting a TX/RX/CAD operation
1 Æ PLL did not lock
0 Æ PLL did lock
6 RxPayloadCrcOn r n/a
CRC Information extracted from the received packet header
0 Æ Header indicates CRC off
1 Æ Header indicates CRC on
RegHopChannel
(0x1C)
5-0 FhssPresentChannel r n/a Current value of frequency hopping channel in use.
RegModemConfig
1
(0x1D)
7-4 Bw rw 0x07
Signal bandwidth:
0000 Æ 7.8 kHz
0001 Æ 10.4 kHz
0010 Æ 15.6 kHz
0011 Æ 20.8kHz
0100 Æ 31.25 kHz
0101 Æ 41.7 kHz
0110 Æ 62.5 kHz
0111 Æ 125 kHz
1000 Æ 250 kHz
1001 Æ 500 kHz
other values Æ reserved
In the lower band (169MHz), signal bandwidths 8&9 are not
supported)
3-1 CodingRate rw ‘001’
Error coding rate
001 Æ 4/5
010 Æ 4/6
011 Æ 4/7
100 Æ 4/8
All other values Æ reserved
In implicit header mode should be set on receiver to determine
expected coding rate. See Section 4.1.1.3
0 ImplicitHeaderModeOn rw 0x0
0 Æ Explicit Header mode
1 Æ Implicit Header mode